1371439 has 12 divisors (see below), whose sum is σ = 1508760. Its totient is φ = 1244880.

The previous prime is 1371431. The next prime is 1371449. The reversal of 1371439 is 9341731.

It is not a de Polignac number, because 1371439 - 2³ = 1371431 is a prime.

It is a Duffinian number.

1371439 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1371431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10404 + ... + 10534.

It is an arithmetic number, because the mean of its divisors is an integer number (125730).

2^1371439 is an apocalyptic number.

1371439 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1371439 is a deficient number, since it is larger than the sum of its proper divisors (137321).

1371439 is a wasteful number, since it uses less digits than its factorization.

1371439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198 (or 179 counting only the distinct ones).

The product of its digits is 2268, while the sum is 28.

The square root of 1371439 is about 1171.0845400739. The cubic root of 1371439 is about 111.1029264712.

The spelling of 1371439 in words is "one million, three hundred seventy-one thousand, four hundred thirty-nine".